. >>> this morning on "early today," murder in benghazi. president obama vows justice will be done after the horrific killing of the u.s. ambassador to libya. >>> money out the window. bank robbery suspects hurl cash during a high-speed police chase. >>> and baby buzz? what england's duchess kate has been turning down that's sparking pregnancy rumors. captions paid for by nbc-universal television >>> hello and good morning. welcome to our viewers across the nation, including the pacific time zone. i'm mara schiavocampo. today, we begin with firing back. in response to deadly attacks in libya that killed a u.s. ambassador and three diplomats, an elite group of marines has been sent to ramp up security at u.s. facilities in libya's capital. meanwhile, the violence has spread to yemen's capital this morning, where protesters have attacked the u.s. embassies. nbc's tracie potts has more from washington. tracie, good morning. >> reporter: hi, mara, good morning. good morning, everyone. here on capitol hill, the senate is condemning what happened